Perhaps you should try some spelling variations:
vua triet » cua triet, va triet, va trien
mai khoi » mai khoa, tai khoa, cac khoi
chieu ke » hieu ky, hieu ve, hieu kem
vu sach » vu bach, su sach, vu khach
mai hoi » dai hoi, lai hoi, mai doi
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi
ke cau » ket cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang ((((ma hoi) OR (mai hoi))) or (mai khoi)). chieu ke cau truc va hanh va vua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ((((ma hoi) OR (mai hoi))) OR (mai khoi)). chieu ke cau truc va hanh va vua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang ((((ma hoi) OR (mai hoi))) or (mai khoi)). chieu ke cau truc va hanh va vua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang ((((ma hoi) OR (mai hoi))) or (mai khoi)). chieu ke cau truc va hanh va vua triet*.